#include "key.h"

uc key_read()
{
	uc temp = 0;
	P44=0;P42=1;P35=1;P34=1;
	if(P33==0) temp=4;
	if(P32==0) temp=5;
	if(P31==0) temp=6;
	if(P30==0) temp=7;
	return temp;
}